I was the first Airbnb guest at Sirangsan's place and I really enjoyed my stay. The apartment was very comfortable, affordable and quiet.
It is a bit far from the center, so it works best for long stays. There is inexpensive public transportation in proximity to the apartment. I preferred taking the boat which is only a 2-minute walk to the pier and a 20 to 30 minute ride to the center. Taking the Airport link to the MRT and BRT is also easy. It is about a 5-10 minute drive to the Hau Mak Station by taxi or motorbike and from there, only 3 stops to the Sukhumvit MRT and BRT Skytrain.
The neighborhood is great for experiencing local Thai living. The Bang Kapi mall is across from the condo and there are night markets, 7-Elevens and street vendors all with walking distance.
Sirangsan is a very responsive and a pleasant host. I highly recommend her place.